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108640241 = 397273653
BaseRepresentation
bin1100111100110…
…11011111110001
321120102111101122
412132123133301
5210302441431
614440312025
72456266253
oct636333761
9246374348
10108640241
1156363026
1230472615
131967a488
14105ddcd3
15980ea7b
hex679b7f1

108640241 has 4 divisors (see below), whose sum is σ = 108914292. Its totient is φ = 108366192.

The previous prime is 108640237. The next prime is 108640261. The reversal of 108640241 is 142046801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 142046801 = 1310926677.

It can be written as a sum of positive squares in 2 ways, for example, as 88435216 + 20205025 = 9404^2 + 4495^2 .

It is a cyclic number.

It is not a de Polignac number, because 108640241 - 22 = 108640237 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 108640241.

It is not an unprimeable number, because it can be changed into a prime (108640261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136430 + ... + 137223.

It is an arithmetic number, because the mean of its divisors is an integer number (27228573).

Almost surely, 2108640241 is an apocalyptic number.

It is an amenable number.

108640241 is a deficient number, since it is larger than the sum of its proper divisors (274051).

108640241 is an equidigital number, since it uses as much as digits as its factorization.

108640241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274050.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 108640241 is about 10423.0629375438. The cubic root of 108640241 is about 477.1594984839.

The spelling of 108640241 in words is "one hundred eight million, six hundred forty thousand, two hundred forty-one".

Divisors: 1 397 273653 108640241